Simple and Free
It is free so far so I love it!
Works perfect for Physical Therapy
The only thing I would add would be the ability to count sets as well as reps. I do six sets of three reps of (work then rest).

This high-intensity interval training timer allows for customizable workout sessions. Track your progress and performance with detailed history and graphical representations. It's designed for effective fat burning and metabolism boosting.
1.0
June 24, 2017
This app has been updated by Apple to display the Apple Watch app icon.
Simplest Tabata is a high-intensity interval training (HIIT) timer designed to help users conduct effective workouts. It offers customizable durations for preparation, workout, and rest periods, along with configurable cycles and sets.
Yes, Simplest Tabata records your workout history and tracks your performance. It also provides graphical progress history to help you monitor your fitness journey.
Yes, the application is designed to work seamlessly on both iPhone and iPad devices, offering a consistent user experience across Apple platforms.
Simplest Tabata provides a three-second chime indicator during your workout. It also sends a notification when the Tabata session ends, even when running in the background.
Yes, Simplest Tabata offers integration with your device's default music player, allowing you to enjoy your favorite music during your training sessions.
You can customize preparation, workout, and rest durations. Additionally, you can configure the number of cycles and Tabatas (sets) to suit your specific training needs.
With its easy and lovely interface, Simplest Tabata is accessible for beginners. The customizable nature allows users to start with shorter intervals and gradually increase intensity.
Simplest Tabata was last updated on June 24, 2017, with version 1.0. Further updates may be released by the developer to introduce new features or improvements.